/Engine/Source/Runtime/SlateCore/Public/Application/SlateWindowHelper.h
Reorders the given collection of windows so the specified window is brought to the front.
static void ArrangeWindowToFront ( [TArray](API\Runtime\Core\Containers\TArray)< [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWindow](API\Runtime\SlateCore\Widgets\SWindow) >> & Windows, const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWindow](API\Runtime\SlateCore\Widgets\SWindow) > & WindowToBringToFront )